| /******************************************************************************* |
| * Copyright (c) 2009, 2010 Oracle. All rights reserved. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v1.0, which accompanies this distribution |
| * and is available at http://www.eclipse.org/legal/epl-v10.html. |
| * |
| * Contributors: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.core.internal.context.orm; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.ListIterator; |
| import java.util.Vector; |
| import org.eclipse.jpt.core.context.JoinColumn; |
| import org.eclipse.jpt.core.context.JoinColumnEnabledRelationshipReference; |
| import org.eclipse.jpt.core.context.JoinColumnJoiningStrategy; |
| import org.eclipse.jpt.core.context.RelationshipMapping; |
| import org.eclipse.jpt.core.context.TypeMapping; |
| import org.eclipse.jpt.core.context.orm.OrmJoinColumn; |
| import org.eclipse.jpt.core.context.orm.OrmJoinColumnJoiningStrategy; |
| import org.eclipse.jpt.core.resource.orm.OrmFactory; |
| import org.eclipse.jpt.core.resource.orm.XmlJoinColumn; |
| import org.eclipse.jpt.core.resource.orm.XmlJoinColumnsMapping; |
| import org.eclipse.jpt.db.Table; |
| import org.eclipse.jpt.utility.internal.CollectionTools; |
| import org.eclipse.jpt.utility.internal.iterators.CloneIterator; |
| import org.eclipse.jpt.utility.internal.iterators.CloneListIterator; |
| import org.eclipse.jpt.utility.internal.iterators.EmptyIterator; |
| import org.eclipse.jpt.utility.internal.iterators.EmptyListIterator; |
| import org.eclipse.jpt.utility.internal.iterators.SingleElementListIterator; |
| import org.eclipse.wst.validation.internal.provisional.core.IMessage; |
| import org.eclipse.wst.validation.internal.provisional.core.IReporter; |
| |
| public abstract class AbstractOrmJoinColumnJoiningStrategy |
| extends AbstractOrmXmlContextNode |
| implements OrmJoinColumnJoiningStrategy |
| { |
| protected OrmJoinColumn defaultJoinColumn; |
| |
| protected final Vector<OrmJoinColumn> specifiedJoinColumns = new Vector<OrmJoinColumn>(); |
| |
| protected final OrmJoinColumn.Owner joinColumnOwner; |
| |
| protected XmlJoinColumnsMapping resource; |
| |
| |
| protected AbstractOrmJoinColumnJoiningStrategy( |
| JoinColumnEnabledRelationshipReference parent, |
| XmlJoinColumnsMapping resource) { |
| super(parent); |
| this.resource = resource; |
| this.joinColumnOwner = this.buildJoinColumnOwner(); |
| this.initializeSpecifiedJoinColumns(); |
| this.initializeDefaultJoinColumn(); |
| } |
| |
| public void initializeFrom(JoinColumnJoiningStrategy oldStrategy) { |
| for (JoinColumn joinColumn : CollectionTools.iterable(oldStrategy.joinColumns())) { |
| JoinColumn newJoinColumn = this.addSpecifiedJoinColumn(this.specifiedJoinColumnsSize()); |
| newJoinColumn.setSpecifiedName(joinColumn.getName()); |
| newJoinColumn.setSpecifiedReferencedColumnName(joinColumn.getReferencedColumnName()); |
| } |
| } |
| |
| protected abstract OrmJoinColumn.Owner buildJoinColumnOwner(); |
| |
| protected void initializeSpecifiedJoinColumns() { |
| for (XmlJoinColumn resourceJoinColumn : this.resource.getJoinColumns()) { |
| this.specifiedJoinColumns.add(buildJoinColumn(resourceJoinColumn)); |
| } |
| } |
| |
| protected void initializeDefaultJoinColumn() { |
| if (mayHaveDefaultJoinColumn()) { |
| this.defaultJoinColumn = this.buildJoinColumn(null); |
| } |
| } |
| |
| @Override |
| public JoinColumnEnabledRelationshipReference getParent() { |
| return (JoinColumnEnabledRelationshipReference) super.getParent(); |
| } |
| |
| public JoinColumnEnabledRelationshipReference getRelationshipReference() { |
| return this.getParent(); |
| } |
| |
| public RelationshipMapping getRelationshipMapping() { |
| return this.getRelationshipReference().getRelationshipMapping(); |
| } |
| |
| public String getTableName() { |
| TypeMapping typeMapping = getRelationshipSource(); |
| return typeMapping == null ? null : getRelationshipSource().getPrimaryTableName(); |
| } |
| |
| public Table getDbTable(String tableName) { |
| TypeMapping typeMapping = getRelationshipSource(); |
| return typeMapping == null ? null : typeMapping.getDbTable(tableName); |
| } |
| |
| public boolean tableNameIsInvalid(String tableName) { |
| TypeMapping typeMapping = getRelationshipSource(); |
| return typeMapping == null ? false : typeMapping.tableNameIsInvalid(tableName); |
| } |
| |
| protected Iterator<String> candidateTableNames() { |
| TypeMapping typeMapping = getRelationshipSource(); |
| return typeMapping == null ? EmptyIterator.<String> instance() : typeMapping.associatedTableNamesIncludingInherited(); |
| } |
| |
| public void addStrategy() { |
| if (specifiedJoinColumnsSize() == 0) { |
| addSpecifiedJoinColumn(0); |
| } |
| } |
| |
| public void removeStrategy() { |
| for (JoinColumn each : CollectionTools.iterable(specifiedJoinColumns())) { |
| removeSpecifiedJoinColumn(each); |
| } |
| } |
| |
| public Table getReferencedColumnDbTable() { |
| TypeMapping relationshipTarget = getRelationshipTarget(); |
| return (relationshipTarget == null) ? null : relationshipTarget.getPrimaryDbTable(); |
| } |
| |
| |
| // **************** join columns ******************************************* |
| |
| public ListIterator<OrmJoinColumn> joinColumns() { |
| return this.hasSpecifiedJoinColumns() ? |
| this.specifiedJoinColumns() : this.defaultJoinColumns(); |
| } |
| |
| public int joinColumnsSize() { |
| return this.hasSpecifiedJoinColumns() ? |
| this.specifiedJoinColumnsSize() : this.defaultJoinColumnsSize(); |
| } |
| |
| |
| // **************** default join column ************************************ |
| |
| public OrmJoinColumn getDefaultJoinColumn() { |
| return this.defaultJoinColumn; |
| } |
| |
| protected void setDefaultJoinColumn(OrmJoinColumn joinColumn) { |
| OrmJoinColumn old = this.defaultJoinColumn; |
| this.defaultJoinColumn = joinColumn; |
| this.firePropertyChanged(DEFAULT_JOIN_COLUMN_PROPERTY, old, joinColumn); |
| } |
| |
| protected ListIterator<OrmJoinColumn> defaultJoinColumns() { |
| if (this.defaultJoinColumn != null) { |
| return new SingleElementListIterator<OrmJoinColumn>(this.defaultJoinColumn); |
| } |
| return EmptyListIterator.instance(); |
| } |
| |
| protected int defaultJoinColumnsSize() { |
| return (this.defaultJoinColumn == null) ? 0 : 1; |
| } |
| |
| |
| // **************** specified join columns ********************************* |
| |
| public ListIterator<OrmJoinColumn> specifiedJoinColumns() { |
| return new CloneListIterator<OrmJoinColumn>(this.specifiedJoinColumns); |
| } |
| |
| public int specifiedJoinColumnsSize() { |
| return this.specifiedJoinColumns.size(); |
| } |
| |
| public boolean hasSpecifiedJoinColumns() { |
| return ! this.specifiedJoinColumns.isEmpty(); |
| } |
| |
| public OrmJoinColumn addSpecifiedJoinColumn(int index) { |
| OrmJoinColumn oldDefaultJoinColumn = this.defaultJoinColumn; |
| if (oldDefaultJoinColumn != null) { |
| //null the default join column now if one already exists. |
| //if one does not exist, there is already a specified join column. |
| //Remove it now so that it doesn't get removed during an update and |
| //cause change notifications to be sent to the UI in the wrong order |
| this.defaultJoinColumn = null; |
| } |
| XmlJoinColumn resourceJoinColumn = OrmFactory.eINSTANCE.createXmlJoinColumn(); |
| OrmJoinColumn contextJoinColumn = this.buildJoinColumn(resourceJoinColumn); |
| this.specifiedJoinColumns.add(index, contextJoinColumn); |
| this.resource.getJoinColumns().add(index, resourceJoinColumn); |
| this.fireItemAdded(SPECIFIED_JOIN_COLUMNS_LIST, index, contextJoinColumn); |
| if (oldDefaultJoinColumn != null) { |
| this.firePropertyChanged(DEFAULT_JOIN_COLUMN_PROPERTY, oldDefaultJoinColumn, null); |
| } |
| return contextJoinColumn; |
| } |
| |
| protected void addSpecifiedJoinColumn(int index, OrmJoinColumn joinColumn) { |
| this.addItemToList(index, joinColumn, this.specifiedJoinColumns, SPECIFIED_JOIN_COLUMNS_LIST); |
| } |
| |
| protected void addSpecifiedJoinColumn(OrmJoinColumn joinColumn) { |
| this.addSpecifiedJoinColumn(this.specifiedJoinColumns.size(), joinColumn); |
| } |
| |
| public void removeSpecifiedJoinColumn(JoinColumn joinColumn) { |
| this.removeSpecifiedJoinColumn(this.specifiedJoinColumns.indexOf(joinColumn)); |
| } |
| |
| public void removeSpecifiedJoinColumn(int index) { |
| OrmJoinColumn removedJoinColumn = this.specifiedJoinColumns.remove(index); |
| if (this.specifiedJoinColumns.isEmpty()) { |
| //create the defaultJoinColumn now or this will happen during project update |
| //after removing the join column from the resource model. That causes problems |
| //in the UI because the change notifications end up in the wrong order. |
| this.defaultJoinColumn = this.buildJoinColumn(null); |
| } |
| this.resource.getJoinColumns().remove(index); |
| this.fireItemRemoved(SPECIFIED_JOIN_COLUMNS_LIST, index, removedJoinColumn); |
| if (this.defaultJoinColumn != null) { |
| //fire change notification if a defaultJoinColumn was created above |
| this.firePropertyChanged(DEFAULT_JOIN_COLUMN_PROPERTY, null, this.defaultJoinColumn); |
| } |
| } |
| |
| protected void removeSpecifiedJoinColumn_(OrmJoinColumn joinColumn) { |
| removeItemFromList(joinColumn, this.specifiedJoinColumns, SPECIFIED_JOIN_COLUMNS_LIST); |
| } |
| |
| public void moveSpecifiedJoinColumn(int targetIndex, int sourceIndex) { |
| CollectionTools.move(this.specifiedJoinColumns, targetIndex, sourceIndex); |
| this.resource.getJoinColumns().move(targetIndex, sourceIndex); |
| fireItemMoved(SPECIFIED_JOIN_COLUMNS_LIST, targetIndex, sourceIndex); |
| } |
| |
| protected OrmJoinColumn buildJoinColumn(XmlJoinColumn resourceJoinColumn) { |
| return this.getXmlContextNodeFactory().buildOrmJoinColumn(this, this.joinColumnOwner, resourceJoinColumn); |
| } |
| |
| // **************** resource => context ************************************ |
| |
| public void update() { |
| updateSpecifiedJoinColumns(); |
| updateDefaultJoinColumn(); |
| } |
| |
| protected void updateSpecifiedJoinColumns() { |
| // make a copy of the XML join columns (to prevent ConcurrentModificationException) |
| Iterator<XmlJoinColumn> xmlJoinColumns = |
| new CloneIterator<XmlJoinColumn>(this.resource.getJoinColumns()); |
| |
| for (Iterator<OrmJoinColumn> contextJoinColumns = this.specifiedJoinColumns(); |
| contextJoinColumns.hasNext(); ) { |
| OrmJoinColumn contextJoinColumn = contextJoinColumns.next(); |
| if (xmlJoinColumns.hasNext()) { |
| contextJoinColumn.update(xmlJoinColumns.next()); |
| } |
| else { |
| removeSpecifiedJoinColumn_(contextJoinColumn); |
| } |
| } |
| |
| while (xmlJoinColumns.hasNext()) { |
| addSpecifiedJoinColumn(buildJoinColumn(xmlJoinColumns.next())); |
| } |
| } |
| |
| protected void updateDefaultJoinColumn() { |
| if (mayHaveDefaultJoinColumn()) { |
| if (this.defaultJoinColumn == null) { |
| this.setDefaultJoinColumn(this.buildJoinColumn(null)); |
| } else { |
| this.defaultJoinColumn.update(null); |
| } |
| } else { |
| this.setDefaultJoinColumn(null); |
| } |
| } |
| |
| protected boolean mayHaveDefaultJoinColumn() { |
| return getRelationshipReference().mayHaveDefaultJoinColumn() |
| && ! hasSpecifiedJoinColumns(); |
| } |
| |
| |
| // **************** validation ********************************************* |
| |
| @Override |
| public void validate(List<IMessage> messages, IReporter reporter) { |
| super.validate(messages, reporter); |
| for (Iterator<OrmJoinColumn> stream = this.joinColumns(); stream.hasNext(); ) { |
| stream.next().validate(messages, reporter); |
| } |
| } |
| } |